The writing process for the majority of Metallicaâs albums have followed the same process. A large slew of guitar riffs written primarily by James Hetfield, sometimes Kirk Hammett, and rarely the bandâs bass player, (that now being bass virtuoso Robert Trujillo) are reviewed and selected.
1 Delhi is most polluted city in the world in PM2.5 concentrations. 2  Half of the top 20 most polluted cities were in India, according to data.  PM2.5 is considered most harmful to health.
Most dangerous city: San Pedro Sula, Honduras. San Pedro Sula, Honduras, has been given the unfortunate title of the most dangerous city in the world. The data was compiled by Citizen Council for Public Security, Justice, and Peace, a Mexican think tank focusing on crime statistics from the Western Hemisphere. The city tops the list for the second year in a row.